Smith chaeles pullman



(No. Modei.)

S. C. PULLMAN.

ALARM FOR RAILWAY TRANS. N0. 315,662. Patented Apr. 14, 1885.

IJV VIWTOR WITNESSES UNITEDn STATES PATENT OEEIcEo SMITH CHARLES PULLMAN, OF OATSKILIJ, NEV YORK.

ALARM FOR RAILWAY-TRAINS.

SPECIFICATION forming part of Letters Patent No. 315,662, dated April 14, 1885.

(No model.)

To all whom, it may concern.-

Be it known that I, SMITH C. PULLMAN, a citizen of the United States, residing at Catskill, in the county of Greene and State of New York, have invented a new and useful Improvement in Electric Alarms for Railway- Trains, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to electric alarms for railroad-trains, designed to signal tothe eugineer when a car breaks loose from a train, or to enable the conductor to signal to the engineer from either car of a train, as will be hereinafter fully described, and particularly pointed out in the claims.

In the drawings, Figure l is a sectional detail view of a locomotive, tender, and one car of a train, showing an application of nly signaling apparatus thereto 5 and Fig. 2 is an end elevation of a passengercoach with the apparatus applied. Fig. 3 is an enlarged detail view of one of the spring-jacks, and Fig. et is a side elevation of one of the jacks with one side plate removed.

Referring by letter to the accompanying drawings, A designates the loconiotive,\vliich is provided with the battery B and the vibrating bell C.

D designates a switch by which the circuit may be opened when the engineer does not desire to hear the bell ring. The line-wires are insulated and wrapped together for convenience and neatness, and are run along the side of the car, where they are out of the way and out of sight. At each endof each car are provided the binding-posts E E', which connect the line-wires and the push-buttons F. From the binding-posts the line wires extend through openings G in the ends of the car over the door far enough to permit them to be coupled with the wires of the next cars. The projecting ends ofthe line-wires are connected to my improved couplingjacks to jacks is concave on each side near its forward end, and is then convexed until it forms the point I'-. To each side of the body portion H is secured a German-silver spring, J2, which is bent to conform to the outline of the forward portion of the body H. The springs J and the sides I I are secured in place by screws. The coupling-jacks are all alike in construction, so that the coupling can be effected at either end of the car. The cable consists of two wires incased in lead, and run from the engine under the tank to its rear end. On the coaches the wires are covered with gutta-percha. Then two jacks are shoved together, the hard rubber separates the springs and niakes two separate conductors. Then the train breaks apart, the jacks pull apart, and the springs come together and close the circuit, which causes the vibrating bell on the engine to ring, and notities the engineer that his train has parted. It' the engineer does not want to hear the bell ringing until he has coupled up again, he can turn the crank of the two-point switch ou the deadpin, which opens the circuit, thus stopping the bell. The jack on the rear end of the rear car can bc shoved astride the cord to keep it open.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is-

1. The jack having the non conducting body provided with the forwardlyextending reduced projection having the wedge-shaped point, springs made of conducting material and secured to the body on opposite sides, the front ends of the springs extending beyond the wedge-shaped point, said extended portions of the springs being bent in the form of a compound curve and adapted to come together normally at their front ends to close the circuit, and conducting-wires attached to the springs, substantially as described.

2. The combination of the jacks having each the conducting body provided with the forwardly-extending reduced projection having the wedge-shaped point, springs made of conducting material and secured to the body on opposite sides, the front ends of the springs extending beyond the wedge-shaped point,

IOO

said extended portions of the springs being,` my own I have hereto axed my signature in bent in the forni of fa compound onrve, and presence of two Witnesses. adapted to come together at their` ends when [T1 i T the jacks are disconnected, the conducting SMILE CHARLES PULLMAB' 5 Wires or cables, the battery, and push-but- VtneSSes:

tons, substantially as described. WILMAM H. BLATT,

n testimony that I claim the foregoing :is EKLUN T. HAINns. 

